St. Clair County Education: 16,956 white students enrolled in school districts in 2023-24 school year

Dave Deets, Superintendent at Mascoutah Community Unit School District 19 | Mascoutah Community Unit School District 19

By S. M. Pollard

Oct 7, 2025

There were 16,956 white students enrolled in St. Clair County school districts in the 2023-24 school year, 2.4% more than the previous year, according to the Illinois State Board of Education.

Data showed that white students made up 44.7% of the 37,909 students in the county. They were the most represented ethnicity.

Among the 27 districts in St. Clair County, Mascoutah Community Unit School District 19 recorded the highest enrollment of white students in the 2023-24 school year, with a total of 2,839 students.

The main offices of all districts mentioned in the story are located in cities associated with St. Clair County.

Illinois allocated $8.6 billion to K-12 education in its 2025 budget—a $350 million increase over FY 2024, meeting the minimum required under the state’s school funding formula.

As of the 2023-24 school year, Illinois public schools enrolled approximately 1.85 million students across nearly 4,000 schools. There was roughly one teacher for every 15 students, slightly better than the national average of 1:16.

Ethnic Composition of St. Clair County School Districts Enrollment (2023-24)

Enrollment Demographics in St. Clair County Districts During 2023-24 School Year

District	white Student Enrollment Percentage	Total enrollment
Mascoutah Community Unit School District 19	68%	4,177
O'Fallon Community Consolidated School District 90	65%	3,952
Belleville Township High School District 201	40.5%	4,676
O'Fallon Township High School District 203	58.7%	2,510
Belleville School District 118	33.1%	3,303
Freeburg Community Consolidated School District 70	93.7%	780
Dupo Community Unit School District 196	80.2%	881
Millstadt Consolidated Community School District 160	91.8%	684
Freeburg Community High School District 77	92.3%	661
Smithton Community Consolidated School District 130	94.8%	541
Wolf Branch School District 113	61.2%	779
New Athens Community Unit School District 60	97.3%	474
Marissa Community Unit School District 40	89.3%	487
Lebanon Community Unit School District 9	66.7%	514
Shiloh Village School District 85	62.2%	545
Whiteside School District 115	26.9%	1,158
Grant Community Consolidated School District 110	47.2%	568
Central School District 104	41.2%	622
Harmony Emge School District 175	33.1%	677
Belle Valley School District 119	20%	961
Pontiac-William Holliday School District 105	28.2%	607
High Mount School District 116	38.8%	320
Signal Hill School District 181	36.1%	280
Cahokia Community Unit School District 187	3%	3,021
St. Libory Consolidated School District 30	98.5%	67
East St. Louis School District 189	0.8%	4,536